Home / 20,462.38-30,690.14-5,672.78

Finding the Fourth Proportional to 20,462.38, 30,690.14 and 5,672.78

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Solution

The fourth proportional to 20,462.38, 30,690.14 and 5,672.78 is: 8,508.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.38 : 30,690.14 = 5,672.78 : x
  2. Step 2: Convert to fraction form
    20,462.38/30,690.14 = 5,672.78/x
  3. Step 3: Cross multiply
    20,462.38x = 30,690.14 × 5,672.78
  4. Step 4: Simplify right side
    20,462.38x = 174,098,412.39
  5. Step 5: Solve for x
    x = 174,098,412.39/20,462.38
  6. Step 6: Final answer
    x = 8,508.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.